511242256 has 20 divisors (see below), whose sum is σ = 1132036672. Its totient is φ = 219103776.

The previous prime is 511242233. The next prime is 511242299. The reversal of 511242256 is 652242115.

It is a super-2 number, since 2×511242256² = 522737288639939072, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2282220 + ... + 2282443.

Almost surely, 2^511242256 is an apocalyptic number.

511242256 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

511242256 is an abundant number, since it is smaller than the sum of its proper divisors (620794416).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

511242256 is a wasteful number, since it uses less digits than its factorization.

511242256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4564678 (or 4564672 counting only the distinct ones).

The product of its digits is 4800, while the sum is 28.

The square root of 511242256 is about 22610.6668632307. Note that the first 3 decimals coincide. The cubic root of 511242256 is about 799.6051468124.

The spelling of 511242256 in words is "five hundred eleven million, two hundred forty-two thousand, two hundred fifty-six".